Shaking screen



Nov. `17, 1931. w` L. WETTLAUFER SHAKING SCREEN Filed 001'.. 26, 1927 Patented Nov. 17, 1931 UNITED STATES 'PATENT FFECE WILLIAM L. WETTLAUFER, -CF BUFFALO, NEW YORK SHAKINGr SCREEN Application led OctoberV 26, 1927. Serial No. 228,878.

This invention relates generally to shaking ends in semi-circular seats or notches 15 screens, but more particularly to machines formed in the side bars of the panel-frame, for screening and grading crushed stone, while their intermediate portions are supores, coal and similar coarse materials by ported in similar seats 17 formed in the longiwhich the screen-cloth is subjected to heavy tudinal bars 13 of the panel in alinement with 55 wear. the seats 15. These seats are spaced to corre- The object of my invention is to prolong Spend to the spacing of the bars 13. the life of the screen by so constructing and Preferably these seats and the cross rods mounting the separating members of its are of such relative dimensions that the rods panels or screen surfaces that one or more eXtend somewhat above the surfaces of said G0 worn-out rods or members can be readily rescreenbars, to retard the tiow of the maplaced by new ones without disturbing those terial over the screen and obtain a more still in serviceable condition, thus avoiding thorough separation. The rods are held or the necessity of discarding the whole panel clamped in their seats by any suitable means;

or surface and effecting an important saving. for example, by inclined guard-plates 18 ap- 65 In the accompanying drawings plied to the inner sides of the side walls of Figure 1 is a top plan view of a paneled the screen and bearing at their lower edges shaking screen embodying the invention. upon the end-portions of the rods, as shown Figure 2 is a perspective view of one of its in Figure 4. These plates fulcrum against 0 panels. Figure 3 is an enlarged longitudinal nuts or abutments 19 and are drawn toward 70 section of one of the panels, on line 3-3, Figthe screen-walls by clamping bolts 20, thus ure 2. Figure 4 is an enlarged cross section securely holding said rods in place. of the screen, on line 4-4, Figure 1. A It is desirable to crown the screen surface Similar characters of reference indicate slightly, and for this purpose those longi- 2" corresponding parts throughout the several tudinal bars 13 near the sides of the panel views. are in a somewhat lower pla-ne than those The frame of the screen may be of any apat or near its center. The cross rods 14 are propriate construction, that shown in the normally straight, but their end-portions are drawings being intended for use in an inbent downward against their seats upon clined position and having parallel side walls tightening the clamping bolts of the guard- S0 1() and a transverse wall 11 at its lower end. plates 18.

In the example illustrated in the drawings, The longitudinal bars may be straight on the screen has three separate panels, each their under as well as their upper sides, but

s.. comprising a rectangular frame 12 of the they are preferably formed opposite their m proper dimensions to fit into the screen frame notches with lugs or enlargements 21. This S5 and carrying a series of parallel equi-spaced construction permits said bars to be made hars or members 18 preferably extending narrower from top to bottom, reducing the lengthwise ofthe screen, and similarly-spaced weight of the panel without sacriiicing the rods or members 14 extending crosswise of strength of the bars opposite their notches. the screen and forming with said bars the Some parts of the screen-panels receive 9G separating surface of the screen. The longimore wear than others and some of the cross tudinal bars 13, which receive much less rods therefore wear out more rapidly than wear than the cross rods 14, may be formed others. By the construction herein shown integral with each panel-frame or otherwise and described, such a worn-out rod or rods which receive considerable wear are removthe screen panels, by loosening the guard ably mounted in the panel, so that one or plates 18, substituting new rods for the wornmore of them can be readily replaced by new out ones and again tightening the guardn, rods. In the preferred embodiment of the plates. These acts cause but a brief inter- "i improvement shown, the rods rest at their ruption in the operation of the machine and 100 permanently secured thereto, but the rods can be readily renewed, without disturbing CTI the improvement effects a substantial reduction in the cost of renewals.

I claim as my invention 1. In a screen of the character described, a frame having permanent integrally formed separating members extending lengthwise of the screen and individually-replaceable separating members intersecting and supported by the first-named members said first and second-named members being approximately equi-spaced to conjointly form screen-0penings of substantially the same dimensions both lengthwise and crosswise of the frame.

2. In a screen of the character described, a. frame having permanent separating members extending from front to rear of the screen and individually-replaceable separating members extending from side to side olf the screen at right angles to the path of travel of the material to be screened, said replaceable members being raised above the surface of said permanent members and interlocking with the upper edges thereof.

lVILLIAB/I L. VETTLAUFER.

CERTIFIGATE 0F CORRECTIGN.

Patent No. 1,832,518. Granted November 17, 1931, to

WILLIAM L. WETTLAUFER.

lt is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, line 5, claim 1, strike out the word "permanent"; and that the said Letters Patent should be read with'ths correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of February, A. D. 1932.

M. J. Moore, (Seal) Acting Commissioner of Patents, 

